I don't have either of those, but I think they both have component inputs.
If so, you just run component cables from PS2 to projector. If you're already using the component input on Z1, then you need to use a component video switcher, or use S-video for the Z1 or PS2.
If so, you just run component cables from PS2 to projector. If you're already using the component input on Z1, then you need to use a component video switcher, or use S-video for the Z1 or PS2.